PMK leader Anbumani Ramadoss on Monday demanded the arrest of a college professor who is alleged to have tried to lure her students to extend "sexual favours" to top officials of a leading Tamil Nadu university.

In a statement issued here, Ramadoss also demanded a Central Bureau of Investigation (CBI) probe into the episode.

The former Union Health Minister said a shocking audio clip of the professor in Virudhunagar district trying to lure her students had come to light.

In the audio clip, the professor is allegedly heard saying that those who can provide facilities for the university have to be kept happy and they are expecting favours from the college students.

In the audio clip, the professor does not explicitly say the students have to extend sexual favours but gives enough hints as to what she is trying to convey.

"The shocked poor students were heard saying in a broken voice that they are not interested in the proposal. Undeterred, the professor tells the students that if they agree to the proposal then the students can achieve anything relating to their course," Ramadoss said.

Ramadoss said the professor's mobile phone call records should be checked to determine the others involved in the episode.